Security Context Distribution for Plug-and-Play IoT TLS Setup
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Solution Overview
Problem
IoT devices face challenges in securing data communications due to resource constraints and varied connectivity contexts, making manual configuration inefficient and impractical, especially when deploying security contexts for large numbers of devices.
Innovation Solution
A security context distribution service (SCDS) automatically provides Transport Layer Security (TLS) certificates and other security configurations to IoT devices without manual commissioning, using pre-configured keys and dynamic certificate management to ensure secure data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual configuration is used for IoT devices, then security contexts can be configured, but efficiency decreases and management overhead increases
Solution Approach 1:
The system enables self-service by allowing IoT devices to automatically configure their own security contexts. Devices send discovery messages containing their identifiers, receive security context information from the distribution service, and autonomously complete the configuration process without manual intervention, thereby resolving the contradiction between reliable security configuration and deployment efficiency
Solution Approach 2:
The patent applies preliminary action by pre-configuring security context information in the distribution service before devices need to connect. The service maintains a database of security contexts that can be immediately deployed to devices upon their discovery messages, eliminating the need for manual real-time configuration and significantly improving deployment efficiency
2Reliability
If manual configuration is used for IoT devices, then security can be ensured, but operational complexity increases
Solution Approach 1:
The security context distribution service acts as an intermediary between the manual configuration process and the IoT devices. It receives discovery messages from devices, retrieves appropriate security contexts, and automatically delivers them to the devices. This intermediary approach maintains security reliability while dramatically reducing operational complexity by centralizing the configuration management function
Solution Approach 2:
By implementing self-service, the patent allows IoT devices to independently manage their own security configurations. Devices automatically send discovery messages, receive security contexts, and configure themselves without requiring complex manual configuration processes, thereby reducing operational complexity while maintaining security standards
3Ease of operation
If conventional cloud connectivity is used for IoT devices, then devices can communicate, but security contexts cannot be automatically distributed
Solution Approach 1:
The security context distribution service is designed as a universal system that can serve multiple IoT devices simultaneously. It maintains a centralized database of security contexts and automatically distributes appropriate contexts to any device sending a discovery message, achieving both ease of operation for device connectivity and high automation for security context distribution
Solution Approach 2:
The system applies preliminary action by pre-storing security context information in the distribution service's database before devices need to connect. When devices send discovery messages, the service can immediately retrieve and deliver the pre-configured security contexts, achieving automatic distribution without requiring real-time manual configuration, thus simultaneously improving ease of operation and automation extent
Data Source
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AI summary
Techniques for configuring a device with a security context using a security context distribution service are provided. One embodiment receives, from a first device operating on a first network, a request for a security context for the first device, where the request includes a public certificate for the first device. The request is decrypted, and the public certificate is validated. A set of device requirements are determined based on a unique identifier for the first device and device claim information associated with the first device. Embodiments generate a response message that contains at least one Transport Layer Security (TLS) certificate associated with the first network, based on the set of device requirements, where the response message is encrypted using a public key associated with the first device. The response is message is transmitted to the first device.